# 存储公用代码

# 使用过滤器 过滤颜色提示
from flask import current_app
from flask import g
from flask import session
from functools import wraps



def index_class(index):
    if index == 1:
        return 'first'
    elif index == 2:
        return  'second'
    elif index == 3:
        return 'third'
    else:
        return ''

# 封装用户登录数据
def user_login_data(view_func):
    @wraps(view_func)
    def wrapper(*args, **kwargs):
        user_id = session.get('user_id')
        user = None
        if user_id:
            try:
                from info.models import User
                user = User.query.get(user_id)
            except Exception as e:
                current_app.logger.error(e)
        # 将user 封装到g对象
        g.user = user
        return view_func(*args, **kwargs)
    return wrapper